It is very noisy when compared to a Boss ME80 that I tried, my Zoom G3 and the previous G7 & G2. I have minimised noise using the NR control but it doesn't affect the hiss.It's the same whether the effects are on or off.I have tried replacing the valve, tried ECC83 new Brimar & 82 used Mullard).The valve amp into which it is fed is noise free.Has anyone experience with this pedal? Many thanksRegards